US3612341A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wire formed pull-tab
Assignee: Crown Packaging UK Ltd
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Filing: 1969-10-06
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Granted: 1971-10-12
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Expires: 1989-10-06
Abstract
Abstract An easy-opening can end having an end panel in which a single panel-opening score is spaced from the periphery of the panel and extends completely around the panel is provided with a pull-tab consisting of a length of wire which is bent to provide a finger loop with the end portions of the wire juxtaposed and extending outwards from the loop to form a score-rupturing member and the tab is secured to the end panel at a position adjacent to the inner end of the score-rupturing member and inside the panelopening score in a manner such that on raising the finger loop from the end panel the outer end of the score-rupturing member effects rupturing of the score.
Inventors
- 👤 Jozef Tadeusz Franek
- 👤 Peter Rhodes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 11:11
CPC Classifications
B; B65; B65D; B65D17/00; B65D17/28; B65D17/401; B65D17/4011
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
164 words
A sheet metal can end comprising an end panel provided with a single panel-opening score spaced from the periphery of the end panel and extending completely therearound, and a pull tab comprising a wire of circular cross section bent to form a finger loop having sides which extend lengthwise of the plane of symmetry of the tab, straight portions bent from said sides towards each other, said straight portions terminating in end portions which have the cross section of the wire and are bent outwards away from the finger loop, said end portions being directed towards each other obliquely to said plane of symmetry and having abutting faces located substantially in said plane of symmetry thereby to form a sharp score-rupturing edge, said straight portions being directly bonded to said end panel at a position closely adjacent to a portion of the panel-opening score so that on raising of the finger loop from the end panel the score is ruptured by said score-rupturing edge.
Claim 2
Dependent Claim
164 words
A sheet metal can end comprising an end panel provided with a single panel-opening score spaced from the periphery of the end panel and extending completely therearound, and a pull tab comprising a wire of circular cross section bent to form a finger loop having sides which extend lengthwise of the plane of symmetry of the tab, straight portions bent from said sides towards each other, said straight portions terminating in end portions which have the cross section of the wire and are bent outwards away from the finger loop, said end portions being directed towards each other obliquely to said plane of symmetry and having abutting faces located substantially in said plane of symmetry thereby to form a sharp score-rupturing edge, said straight portions being directly bonded to said end panel at a position closely adjacent to a portion of the panel-opening score so that on raising of the finger loop from the end panel the score is ruptured by said score-rupturing edge.
Claim 3
Dependent Claim
26 words
A can end according to claim 1, wherein said end portion of the wire are directed at an angle of 45* to the plane of symmetry.
Claim 4
Dependent Claim
46 words
A can end according to claim 1, including crank portions connecting the sides of the loop to the said straight portions to provide a clearance between the loop and the can end in the region at which the straight portions are bonded to the end panel.
Claim 5
Dependent Claim
53 words
A can end according to claim 3, including generalLy V-shaped bends formed in the sides of the loop and resting against the end panel to space from the end panel the portion of the loop joining the said bends, thereby to facilitate the insertion of a finger into the loop under said portion.
Claim 6
Dependent Claim
37 words
A can end according to claim 1, wherein said end portions are bent lengthwise thereof so that the free tips thereof project below the plane of that face of the loop which lies on the end panel.
Claim 7
Dependent Claim
58 words
A can end according to claim 1, including a bead located within the panel-opening score and extending upwards from the plane of the end panel, and bends formed in the sides of the finger loop to conform substantially to the configuration of and to overlie the bead, said straight portions of the tab being secured to said bead.
Claim 8
Dependent Claim
78 words
A can end according to claim 1, including a bead located within the area of the end panel bounded by the panel-opening score and extending upwards from the plane of the end panel, and bends formed in the sides of the finger loop to conform substantially to the configuration of the bead, said straight portions being bonded to the junction between said bead and the portion of the end panel extending between the bead and the panel-opening score.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-10-11 | 1975-04-12 | 1975-10-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-10-11 | 1979-04-12 | 1979-10-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-10-11 | 1983-04-12 | 1983-10-12 | $7700.00 | Window Closed / Lapsed |